Anders will play the most intriguing part, that of the ancient samurai warrior Takezo Kensei, Hiro Nakamura's (Masi Oka) childhood hero. While never seen during "Heroes' " first season, Kensei played a key part in the show's plot. Hiro spent most of the season trying to get ahold of Kensei's sword, which he hoped would help him in his quest to save the world.

In another Japanese connection, Tamura will play a Japanese princess.

Henley will play Detective Fuller, a New York police officer. McCallany will play Ricky, the ringleader of a group of Irish thugs.

Fonseca and Agron will play beautiful cheerleaders in Southern California, where Claire (Hayden Panettiere) is expected to move. Fonseca's character April is sweet, while Agron's Debbie is a mean girl.

"Heroes" extends Henley's relationship with NBC and Universal Media Studios. This past development season, he co-starred on David Shore's drama pilot for the network, which was produced by UMS. The actor, who next appears in the feature "The Horsemen," is repped by Bauman, Redanty & Shaul Agency and Rugolo Entertainment.

McCallany, who has been developing a feature that he is looking to direct, next appears in the feature "Vantage Point." He is repped by APA, manager Dave Fleming at Mosaic Media Group and attorney Rick Genow.

Anders, who played Julian Sark on ABC's "Alias," recently guest-starred on ABC's "Grey's Anatomy." He also plays the title role in the feature "Eli." He is repped by SMS and Liberman/Zerman Management.

Tamura has starred in more than 15 Japanese features and TV series and has released 10 albums there. She made her English-language debut in the 2006 feature "Surf School."

Fonseca (HBO's "Big Love") is repped by Gersh and Sager Management.

Agron (the CW's "Veronica Mars") is repped by Gersh and Piper/ Kaniecki Management.